Portable power supply



FIG. 1 is a first perspective view of a portable power supply, showing our design.

FIG. 2 is a second perspective view thereof.

FIG. 3 is a front elevation view thereof.

FIG. 4 is a rear elevation view thereof.

FIG. 5 is a left side elevation view thereof.

FIG. 6 is a right side elevation view thereof.

FIG. 7 is a top plan view thereof.

FIG. 8 is a bottom plan view thereof.

FIG. 9 is a perspective view of the portable power supply, with the handle in an open position; and,

FIG. 10 is an enlarged view of part 10 encircled in FIG. 1.

The dash-dash broken lines in the drawings are for the purpose of illustrating portions of the portable power supply that form no part of the claimed design. The dash-dot broken lines in FIGS. 1 and 10 are for the purpose of illustrating the boundaries of the encircled portions in FIGS. 1 and 10, and form no part of the claimed design. 

CLAIM The ornamental design for a portable power supply, as shown and described. 